Re: To check RBD cache enabled

[Josy <josy@xxxxxxxxxxxxxxxxxxxxx>]

Hi,

I am running the command  from the admin server.

Because there are no asok file in the client server
ls /var/run/ceph/ lists no files in the client server.

>> As Jason points it out you also need to make sure that your restart the client connection for the changes in the ceph.conf file to take effect.

You mean restart the client server ?

(I am sorry, this is something new for me. I have just started learning ceph.)

On 18-10-2017 03:32, Jean-Charles Lopez wrote:

Hi Josy,

just a doubt but it looks like your ASOK file is the one from a Ceph Manager. So my suspicion is that you may be running the command from the wrong machine.

To run this command, you need to ssh into the machine where the client connection is being initiated.

But may be I am wrong regarding your exact connection point.

As Jason points it out you also need to make sure that your restart the client connection for the changes in the ceph.conf file to take effect.

Regards

JC Lopez
Senior Technical Instructor, Global Storage Consulting Practice
Red Hat, Inc.
jelopez@xxxxxxxxxx
+1 408-680-6959

On Oct 17, 2017, at 14:29, Josy <josy@xxxxxxxxxxxxxxxxxxxxx> wrote:

Thanks for the reply.

I added rbd_non_blocking_aio = false in ceph.conf and pushed the admin file to all nodes.

-----
[client]
admin socket = /var/run/ceph/$cluster-$type.$id.$pid.$cctid.asok
log file = /var/log/ceph/client.log
debug rbd = 20
debug librbd = 20
rbd_non_blocking_aio = false
------

However the config show command still shows it as true.
-----------
[cephuser@ceph-las-admin-a1 ceph-cluster]$ sudo ceph --admin-daemon /var/run/ceph/ceph-mgr.ceph-las-admin-a1.asok config show | grep "rbd_non_blocking_aio"
    "rbd_non_blocking_aio": "true",
-----------

Did I miss something ?

On 18-10-2017 01:22, Jean-Charles Lopez wrote:

Hi 

syntax uses the admin socket file : ceph --admin-daemon /var/run/ceph/$cluster-$type.$id.$pid.$cctid.asok config get rbd_cache

Should be /var/run/ceph/ceph.client.admin.$pid.$cctid.asok if your connection is using client.admin to connect to the cluster and your cluster name is set to the default of ceph. But obviously can’t know from here the PID and the CCTID you will have to identify.

You can actually do a ls /var/run/ceph to find the correct admin socket file

Regards

JC Lopez
Senior Technical Instructor, Global Storage Consulting Practice
Red Hat, Inc.
jelopez@xxxxxxxxxx
+1 408-680-6959

On Oct 17, 2017, at 12:50, Josy <josy@xxxxxxxxxxxxxxxxxxxxx> wrote:

Hi,

I am following this article :

http://ceph.com/geen-categorie/ceph-validate-that-the-rbd-cache-is-active/

I have enabled this flag in ceph.conf

[client]
admin socket = /var/run/ceph/$cluster-$type.$id.$pid.$cctid.asok
log file = /var/log/ceph/

But the command to show the conf is not working :

[cephuser@ceph-las-admin-a1 ceph-cluster]$ sudo ceph --admin-daemon  /etc/ceph/ceph.client.admin.keyring config show
admin_socket: exception getting command descriptions: [Errno 111] Connection refused

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